feat: Added option to prevent rebuild of the image (#1970)

src/answer.sh

@@ -1557,49 +1557,4 @@ legacyInstall() {
   return 0
 }
 
-legacyPrepare() {
-
-  local iso="$1"
-  local dir="$2"
-  local desc="$3"
-
-  local tmp="$TMP/boot-images"
-  local image="$tmp/eltorito_img1_bios.img"
-
-  ETFS="boot.img"
-  [ -f "$dir/$ETFS" ] && [ -s "$dir/$ETFS" ] && return 0
-
-  rm -f "$dir/$ETFS" || return 1
-  rm -rf "$tmp" || return 1
-
-  LC_ALL=C xorriso \
-      -no_rc \
-      -osirrox on \
-      -indev "$iso" \
-      -extract_boot_images "$tmp" >/dev/null 2>&1 || {
-    local rc=$?
-    rm -rf "$tmp" || true
-
-    (( rc > 128 )) && exit "$rc"
-
-    error "Failed to extract boot image from $desc ISO!"
-    return 1
-  }
-
-  if [ ! -s "$image" ]; then
-    rm -rf "$tmp" || true
-    error "Failed to locate BIOS boot image in $desc ISO!"
-    return 1
-  fi
-
-  if ! mv -f "$image" "$dir/$ETFS"; then
-    rm -rf "$tmp" || true
-    error "Failed to save boot image from $desc ISO!"
-    return 1
-  fi
-
-  rm -rf "$tmp" || return 1
-  return 0
-}
-
 return 0